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(No Model.)

B. T. HEROLD.

WINDOW SGREENATTAOHMENT.

No. 249,764. Patented Nov. 22,1881.

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NrTEo STATES PATENT OFFICE.

BERNEDOTT T. HEROLD, OF STOCKTON, CALIFORNIA.

WINDOW SCREEN ATTACHMENT.

SPECIFICATION formingpart of Letters Patent No. 249,764, dated November22, 1881.

Application filed April 8,1881. (No model.)

To all whom it may concern: I

Be it known that I, BERNEDOTT T. HEROLD, a citizen of the United States,and residing at Stockton, in the county of San Joaquin and State ofCalifornia, have invented a new and useful Screen Attachment forWVindows, of which the following is a specification.

The object of my invention is toprovide a window-screcnwhich is directlyconnected to the upper and lower sashes, and which can be made to followthe opening or closing of either sash. I accomplish this object by themechanism illustrated in the accompanying drawings, in which-- Figure 1is a vertical section of a window and frame. vFig. 2 is a longitudinalsectional View through the roller. Fig. 3 is a cross-section through theroller. Fig. disadetail view, showing mode of attaching the screen tothe window-sash. Fig. 5 is a view of ratchet at end of roller, and Fig.6 is a detail View.

Similar letters indicate like parts throughout the several views.

A A represent the upper and lower sashes of a window provided withinyimprovemeuts. Within the upper and lower casings of the Window Iplace a cylindrical roller, B, havingsuitable bearings in the sidecasings. The interior of the roller is provided with a rod, (J, aroundwhich is coiled a spiral spring, D, one end of which connects with theroller and the other end is made fast to the central rod, 0. Aratchet-wheel, F, is placed upon the opposite end bearing of the rod, bywhich means a greater or less tension is imparted to the spiral springwithin the roller when the ratchetwheel is rotated forward or backward.This ratchet-wheel is kept in position by a pawl, G. A slot, H, is madealong the outer face of the roller, in which is dovetailed a rod orpiece of wood, I, as shown, and by which the wire screen or meshed clothJ is attached to the roller. To the opposite end of the screen isconnected a cross-bar, K, in the upper face of which are placed staplesor hooks L, in which a sliding bolt, M, attached to the lower face ofthe lower sash and to the upper face of the upper sash engages, and bymoving this bolt backward or forward in the catch-plate ,N, which isconnected to the face of the sash, the screen is disconnected from thewindow, and the cross bar or rod K, to which the screen is connected,becomes a sill for the sash to rest upon. In practice this cross-bar ismade the same in thickness as that of the sash, and follows it up ordown in the same path or groove, while the screen follows in a slot madein the sill and the head.

By this means I provide a continuous-working screen, which follows boththe upper and lower sashes in an automatic manner.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination, with a window-sash, of the roller B, screen J, andcross-bar K, having upon its outer face books or staples L L, in which asliding bolt, M, attached to the sash engages to connect with thescreen, said crossbar K being adapted to form a sill for the sash whenthe screen is disconnected, substantially as specified.

2. The combination of the sash A A, having bolts M, rollers B, havingcentral rod, 0, provided with coiled spring D, screens J, and cross-barsK, having staples or hooks L L, all constructed, arranged, and operatingsubstantially as and for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand andseal this 22d day of March, 1881.

BERNEDOTT T. HEROLD.

Witnesses:

G. W. M. SMITH, H. S. SHANNON.

